Home / 72,119.91-99,526.20-40,285.08

Finding the Fourth Proportional to 72,119.91, 99,526.20 and 40,285.08

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Solution

The fourth proportional to 72,119.91, 99,526.20 and 40,285.08 is: 55,593.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,119.91 : 99,526.20 = 40,285.08 : x
  2. Step 2: Convert to fraction form
    72,119.91/99,526.20 = 40,285.08/x
  3. Step 3: Cross multiply
    72,119.91x = 99,526.20 × 40,285.08
  4. Step 4: Simplify right side
    72,119.91x = 4,009,420,929.10
  5. Step 5: Solve for x
    x = 4,009,420,929.10/72,119.91
  6. Step 6: Final answer
    x = 55,593.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.